US Bridges

Viking DR over Grayson Creek

Fair

Contra Costa County, California · At Ruth DR · Structure no. 28C0411

Built
1960
65 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
77 ft
1 main span
Daily traffic
8,300
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Viking DR over Grayson Creek is a steel stringer/multi-beam or girder carrying Viking DR over Grayson Creek in Contra Costa County, California. It was built in 1960, so it is 65 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 8,300 vehicles a day, roughly 1% of them trucks, projected to reach 13,139 by 2047. The structure is 77 ft (23.5 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesViking DR
CrossesGrayson Creek
LocationAt Ruth DR
RouteCity Street 0
CountyContra Costa County
StateCalifornia
Coordinates37.96652, -122.06678
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.5 m)
Longest span73 ft (22.3 m)
Deck width46 ft (14 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,300 (2020)
Projected traffic13,139 by 2047
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Viking DR over Grayson Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Viking DR over Grayson Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2025.

How much traffic does Viking DR over Grayson Creek carry?

About 8,300 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Viking DR over Grayson Creek?

The structure is 77 ft (23.5 m) long with a longest span of 73 ft (22.3 m) and a deck 46 ft wide.

Who owns Viking DR over Grayson Creek?

It is owned by the City or Municipal Highway Agency.